The airport's gauge received only 11.8mm last month, the lowest it's been since the peak of the drought in 2016, when 5.6mm fell in the same month.

It's a far cry from other years, like when the gauge received 197.2mm in November 2011, and 119.4mm in November 2008.

Keepit Dam hasn't seen a higher level since October, either. On Tuesday, WaterNSW recorded the level at 26.4 per cent, the same as what it was at the start of November.

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Despite the dry weather, Tamworth Regional Weather's Dave Farrenden said locals shouldn't be "stressed about it", because the rest of the year had been relatively wet and the La Nina pattern was still active across Australia.

The BoM has declared Australia is in a La Nina event, and Mr Farrenden said it should have more of an influence over rainfall during December and January.

"The La Nina is going to be active and good for at least the next three months, then it will start to decrease," he said.

"There will still be La Nina conditions up until May, that's the long term forecast."

In the next three months, the BoM's outlook shows a 100 per cent chance of at least 50mm rainfall at the airport, and a 78 per cent chance of 200mm.

Along with the lack of rain, temperatures have soared in the past week, too.

The airport recorded a sweltering 41.6 degrees on Sunday, and hit 40 degrees at 4pm on Monday.

Mr Farrenden warned residents to be ready for a thunderstorm, following on from warm days, and the BoM has forecast possible storms on Wednesday and Thursday, and a high chance of a storm on Friday.